Description
borosilicate glass tube
glass tube MSDS
G3.3 specific physical and chemical properties of high borosilicate glass
1) Silicon content more than 80%
2) Strain temperature 520℃
3) Annealing temperature 560℃
4) Softening temperature 820℃
5) The refractive index 1.47
6) Light transmittance(2mm) 92%
7) Modulus of elasticity 76KNmm -2
8) Tensile strength 40-120Nmm – 2
9) Optical constant of glass stress 3.8 *10 – 6 MM2
10) The processing temperature(104dpass) 1220℃
11) Linear expansion coefficient (20-300℃) 3.3 *10-6 K-1
12) Density(20℃) 2.23gcm-1
13) Specific heat 0.9jg -1k -1
14) Thermal conductivity 1.2Wm -1K -1
15) Water resistance (ISO 719) Level 1
16) Acid resistance (ISO 195) Level 1
17) Alkali resistance (ISO 695) Level 2